EP0376456A2 - Détecteur de position d'un système de direction - Google Patents
Détecteur de position d'un système de direction Download PDFInfo
- Publication number
- EP0376456A2 EP0376456A2 EP89311619A EP89311619A EP0376456A2 EP 0376456 A2 EP0376456 A2 EP 0376456A2 EP 89311619 A EP89311619 A EP 89311619A EP 89311619 A EP89311619 A EP 89311619A EP 0376456 A2 EP0376456 A2 EP 0376456A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- steering gear
- rack
- magnet
- steering
- sensor element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001939 inductive effect Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0421—Electric motor acting on or near steering gear
- B62D5/0424—Electric motor acting on or near steering gear the axes of motor and final driven element of steering gear, e.g. rack, being parallel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/021—Determination of steering angle
- B62D15/0225—Determination of steering angle by measuring on a steering gear element, e.g. on a rack bar
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
- B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
- B62D7/15—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels
- B62D7/1581—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels characterised by comprising an electrical interconnecting system between the steering control means of the different axles
Definitions
- This invention relates to a system for detecting the operational position of an automotive steering gear.
- U.S. Patent 4,671,523 discloses an externally mounted sensor for detecting the position of the steered rear wheels of a vehicle having a four wheel steering system.
- Other systems employ additional sensors such as a linear variable differential transformer (LVDT) for the purpose of detecting the rear wheel steering position.
- LVDT linear variable differential transformer
- Such sensors are subject to maladjustment and generally increase the space requirement for the electronic package mounted within the steering gear.
- U.S. Patent 4,785,901 discloses a rack end signal generating system in which only the extreme left and right steering positions of a steering rack are detected; such a system cannot provide information for controlling a steering gear throughout its full travel.
- a detection system embodying this invention is compatible for use not only with remotely mounted rear wheel steering gears but also main steering gears employed at the front wheels of the vehicle.
- the sensor system may be employed for continuously and reliably detecting the position of a steering gear as the steering gear moves the roadwheels from one extreme position to the other extreme of the possible steering positions.
- the magnet may be attached to the rack of a rack and pinion steering gear.
- the detection means preferably comprises an inductive pickup positioned in proximity to the magnet.
- the inductive pickup may comprise a coil which encircles a portion of the steering rack and may be incorporated into a bearing for slidably supporting the steering rack.
- the magnet may be attached to the piston rod of a hydraulically powered steering gear.
- a system for continuously detecting the operational position of an automotive rack and pinion steering gear preferably comprises a magnet recessed into a rack element which is reciprocably mounted within the steering gear, with the rack being linked with the output members of the steering gear, and means for detecting the position of the magnet as the steering gear is moved reciprocably, with such means comprising an inductive pickup coil which is moulded into a bearing for slidably supporting the steering rack.
- rear steering gear 10 is coupled to a pair of spindles 16, by means of tierods 14. Accordingly, as the tierods are driven reciprocably by steering gear 10, road wheels 12 will be caused to rotate about the kingpin axes defined by ball joints 18, and as a result road wheels 12 will be steered by steering gear 10.
- Figure 2 illustrates the internal parts of but one example of a steering gear suitable for use with a system according to the present invention.
- a system according to the present invention would be useful not only with the illustrated rack and pinion gear but also with other types of steering gears employing hydraulic, mechanical or electrical operating systems as prime movers.
- Figure 2A illustrates a hydraulically powered steering gear in which piston 42, mounted upon piston rod 44, is moved reciprocably by means of hydraulic fluid directed by valves 46.
- the steering gear of Figure 2A includes a support bearing and coil assembly and moving magnet, which will be fully explained in connection with Figure 2.
- the steering gear shown in Figure 2 employs motor 20 as a prime mover to drive pinion shaft 22 through a series of gears. Pinion shaft 22 in turn drives rack 24 reciprocably.
- tierods 14 are connected with the steering racks such that the reciprocal motion of rack 24 is transmitted to the tierods. Accordingly, the tierods comprise the output members of the steering gear.
- Figure 2 further illustrates magnet 32, which is recessed into rack 24, and rack support bushing and coil assembly 26, which, taken together, comprise first and second sensor elements for detecting the position of rack 24.
- FIGS 3, 4 and 5 Details of the sensor assembly according to the present invention are shown in Figures 3, 4 and 5.
- rack 24 is supported on one end by means of rack support block 28 which is maintained in contact with the rack by means of compression spring 30. It is understood that the force imposed by compression spring 30 is opposed by a corresponding force exerted in a downward direction by pinion shaft 22.
- the opposite end of rack 24 is supported by means of rack support bushing and coil assembly 26.
- Assembly 26 comprises not only a bearing for supporting the rack but also a sensing coil for determining the position of magnet 32, and hence, the position of rack 24.
- Magnet 32 is recessed into magnet support 34 which, in turn, is recessed into rack 24. As a result, magnet 32 moves synchronously with rack 24.
- Magnet support 34 may comprise any suitable material such as aluminium or plastic or other materials known to those skilled in the art and suggested by this disclosure.
- assembly 26 includes winding 36, which is connected with system control module 38 to permit the control module to be advised at all times of the location of magnet 32 and rack 24.
- Winding 36 comprises an inductive pickup coil.
- the sensor may be operated by passing an appropriate electrical potential through winding 36 and by measuring the current within the winding. As magnet 32 moves into greater or lesser proximity of winding 36, the current within winding 36 will change accordingly.
- system control module 38 will be able to ascertain the position of rack 24 by means of a lookup table or other means incorporated into a microprocessor or other calibrated device contained within the system control module.
- a system according to the present invention may be employed for the purpose of continuously tracking the location of the steering rack as the rack moves from one extreme of its travel to the other such extreme. Also, as noted above, a system according to this invention will provide an accurate reading of rack position without the necessity of bulky external sensors.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/291,087 US4944356A (en) | 1988-12-28 | 1988-12-28 | Steering system position detector |
US291087 | 1988-12-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0376456A2 true EP0376456A2 (fr) | 1990-07-04 |
EP0376456A3 EP0376456A3 (fr) | 1991-01-30 |
EP0376456B1 EP0376456B1 (fr) | 1993-03-03 |
Family
ID=23118774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89311619A Expired - Lifetime EP0376456B1 (fr) | 1988-12-28 | 1989-11-09 | Détecteur de position d'un système de direction |
Country Status (4)
Country | Link |
---|---|
US (1) | US4944356A (fr) |
EP (1) | EP0376456B1 (fr) |
CA (1) | CA1312807C (fr) |
DE (1) | DE68905169T2 (fr) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000059767A1 (fr) | 1999-04-01 | 2000-10-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Dispositif de direction de vehicules |
EP1266817A2 (fr) * | 2001-06-15 | 2002-12-18 | NSK Ltd., | Direction assistée électrique |
EP1201529A3 (fr) * | 2000-10-27 | 2003-06-25 | Siemens Aktiengesellschaft | Procédé et dispositif pour la détermination de l'angle de braquage d'un véhicule |
JP2003231475A (ja) * | 2002-02-08 | 2003-08-19 | Nsk Ltd | 電動パワーステアリング装置 |
DE10222761A1 (de) * | 2002-05-23 | 2003-12-04 | Volkswagen Ag | Zahnstangenlenkung mit Stellungserfassung |
EP1900603A1 (fr) * | 2006-09-12 | 2008-03-19 | Mando Corporation | Système de contrôle d'angle de pincement de roue de véhicule |
CN104210535A (zh) * | 2013-05-29 | 2014-12-17 | 爱信精机株式会社 | 直线运动机构的位移检测装置及车辆后轮转向装置 |
FR3084327A1 (fr) * | 2018-07-30 | 2020-01-31 | Renault S.A.S | Essieu pour train non moteur de vehicule automobile |
WO2021058048A1 (fr) * | 2019-09-26 | 2021-04-01 | Schaeffler Technologies AG & Co. KG | Actionneur linéaire comprenant un dispositif de mesure pour déterminer une position d'un composant à déplacement linéaire |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2504339B2 (ja) * | 1991-01-21 | 1996-06-05 | トヨタ自動車株式会社 | 操舵角センサ |
US5163529A (en) * | 1991-04-22 | 1992-11-17 | Trw Inc. | Apparatus for sensing position of a member in a vehicle steering gear |
DE19752346B4 (de) * | 1996-12-04 | 2007-12-06 | Volkswagen Ag | Hydraulisch unterstützte Lenkvorrichtung für ein Kraftfahrzeug |
DE10156398B4 (de) * | 2000-11-24 | 2011-09-29 | Continental Teves Ag & Co. Ohg | Vorrichtung zum Messen des Lenkstangenweges einer Kraftfahrzeuglenkung |
CN100434038C (zh) * | 2004-03-05 | 2008-11-19 | 西门子(中国)有限公司 | 磁共振成像设备磁场的调节装置 |
DE102006028785B3 (de) * | 2006-06-23 | 2007-04-12 | Audi Ag | Anordnung von Positionsgebern an einer Schaltstange |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2298081A1 (fr) * | 1975-01-15 | 1976-08-13 | Poclain Sa | Detecteur de position relative de deux pieces |
GB2105474A (en) * | 1981-09-04 | 1983-03-23 | Gewerk Eisenhuette Westfalia | Piston rod for a hydraulic ram |
DE3410534A1 (de) * | 1984-03-22 | 1985-10-03 | Feinmechanische Werke Mainz Gmbh, 6500 Mainz | Weg- oder geschwindigkeitsaufnehmer fuer hydraulische oder pneumatische zylinder oder ventile |
JPS6212457A (ja) * | 1985-07-10 | 1987-01-21 | Fuji Heavy Ind Ltd | 車両用転舵角センサ |
GB2198098A (en) * | 1986-10-20 | 1988-06-08 | Honda Motor Co Ltd | Rear wheel steering device for vehicle with four steerable wheels |
DE3703591A1 (de) * | 1987-02-06 | 1988-08-18 | Audi Ag | Vorrichtung zum erzeugen eines elektrischen signales |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3413007A1 (de) * | 1984-04-06 | 1985-10-17 | Audi AG, 8070 Ingolstadt | Lenkeinrichtung fuer ein kraftfahrzeug |
US4621833A (en) * | 1985-12-16 | 1986-11-11 | Ford Motor Company | Control system for multistable suspension unit |
JPH088943Y2 (ja) * | 1986-07-17 | 1996-03-13 | 東海ティーアールダブリュー株式会社 | ラック・ピニオン式電動パワー・ステアリング装置 |
-
1988
- 1988-12-28 US US07/291,087 patent/US4944356A/en not_active Expired - Lifetime
-
1989
- 1989-09-21 CA CA000612346A patent/CA1312807C/fr not_active Expired - Lifetime
- 1989-11-09 EP EP89311619A patent/EP0376456B1/fr not_active Expired - Lifetime
- 1989-11-09 DE DE8989311619T patent/DE68905169T2/de not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2298081A1 (fr) * | 1975-01-15 | 1976-08-13 | Poclain Sa | Detecteur de position relative de deux pieces |
GB2105474A (en) * | 1981-09-04 | 1983-03-23 | Gewerk Eisenhuette Westfalia | Piston rod for a hydraulic ram |
DE3410534A1 (de) * | 1984-03-22 | 1985-10-03 | Feinmechanische Werke Mainz Gmbh, 6500 Mainz | Weg- oder geschwindigkeitsaufnehmer fuer hydraulische oder pneumatische zylinder oder ventile |
JPS6212457A (ja) * | 1985-07-10 | 1987-01-21 | Fuji Heavy Ind Ltd | 車両用転舵角センサ |
GB2198098A (en) * | 1986-10-20 | 1988-06-08 | Honda Motor Co Ltd | Rear wheel steering device for vehicle with four steerable wheels |
DE3703591A1 (de) * | 1987-02-06 | 1988-08-18 | Audi Ag | Vorrichtung zum erzeugen eines elektrischen signales |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 11, no. 183 (M-598)() 12 June 1987, & JP-A-62 012457 (FUJI HEAVY IND) 21 January 1987, * |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000059767A1 (fr) | 1999-04-01 | 2000-10-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Dispositif de direction de vehicules |
EP1201529A3 (fr) * | 2000-10-27 | 2003-06-25 | Siemens Aktiengesellschaft | Procédé et dispositif pour la détermination de l'angle de braquage d'un véhicule |
US6648096B2 (en) | 2000-10-27 | 2003-11-18 | Siemens Aktiengesellschaft | Method and device for determining a steering angle of a motor vehicle |
EP1724181A2 (fr) * | 2001-06-15 | 2006-11-22 | Nsk Ltd., | Direction assistée électrique |
EP1266817A3 (fr) * | 2001-06-15 | 2003-02-26 | NSK Ltd., | Direction assistée électrique |
US6662897B2 (en) | 2001-06-15 | 2003-12-16 | Nsk Ltd. | Electric power steering apparatus |
US6860360B2 (en) | 2001-06-15 | 2005-03-01 | Nsk Ltd. | Electric power steering apparatus |
US6915874B2 (en) | 2001-06-15 | 2005-07-12 | Nsk Ltd. | Electric power steering apparatus |
EP1266817A2 (fr) * | 2001-06-15 | 2002-12-18 | NSK Ltd., | Direction assistée électrique |
EP1724181A3 (fr) * | 2001-06-15 | 2006-12-06 | Nsk Ltd., | Direction assistée électrique |
JP2003231475A (ja) * | 2002-02-08 | 2003-08-19 | Nsk Ltd | 電動パワーステアリング装置 |
DE10222761A1 (de) * | 2002-05-23 | 2003-12-04 | Volkswagen Ag | Zahnstangenlenkung mit Stellungserfassung |
EP1900603A1 (fr) * | 2006-09-12 | 2008-03-19 | Mando Corporation | Système de contrôle d'angle de pincement de roue de véhicule |
CN104210535A (zh) * | 2013-05-29 | 2014-12-17 | 爱信精机株式会社 | 直线运动机构的位移检测装置及车辆后轮转向装置 |
EP2816321A1 (fr) * | 2013-05-29 | 2014-12-24 | Aisin Seiki Kabushiki Kaisha | Appareil de détection de déplacement pour mécanisme à mouvement linéaire et appareil de direction de roue arrière pour véhicule comprenant celui-ci |
US9254868B2 (en) | 2013-05-29 | 2016-02-09 | Aisin Seiki Kabushiki Kaisha | Displacement detection apparatus for linear motion mechanism and rear wheel steering apparatus for vehicle including the same |
CN104210535B (zh) * | 2013-05-29 | 2017-10-24 | 爱信精机株式会社 | 直线运动机构的位移检测装置及车辆后轮转向装置 |
FR3084327A1 (fr) * | 2018-07-30 | 2020-01-31 | Renault S.A.S | Essieu pour train non moteur de vehicule automobile |
WO2021058048A1 (fr) * | 2019-09-26 | 2021-04-01 | Schaeffler Technologies AG & Co. KG | Actionneur linéaire comprenant un dispositif de mesure pour déterminer une position d'un composant à déplacement linéaire |
US11964690B2 (en) | 2019-09-26 | 2024-04-23 | Schaeffler Technologies AG & Co. KG | Linear actuator comprising a measuring device for determining a position of a linearly moveable component |
Also Published As
Publication number | Publication date |
---|---|
EP0376456A3 (fr) | 1991-01-30 |
CA1312807C (fr) | 1993-01-19 |
US4944356A (en) | 1990-07-31 |
DE68905169T2 (de) | 1993-06-17 |
DE68905169D1 (de) | 1993-04-08 |
EP0376456B1 (fr) | 1993-03-03 |
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